dev: add Tiltfile for local development

Tiltfile

@@ -0,0 +1,63 @@
+# -*- mode: Python -*-
+
+# Extensions 
+load('ext://helm_resource', 'helm_resource', 'helm_repo')
+
+# Specifies that Tilt is allowed to run against the specified k8s context name. 
+allow_k8s_contexts('kubernetes-admin@kubernetes')
+# Anonymous, ephemeral image registry.
+default_registry('ttl.sh')
+
+# Run a defined set of services via config.set_enabled_resources.
+config.define_string_list("to-run", args=True)
+cfg = config.parse()
+groups = {
+    'balloons': ['binary-build-logs', 'controller-logs'],
+    'topology-aware': ['binary-build-logs', 'controller-logs'],
+}
+
+resources = []
+for resource_name in cfg.get('to-run', []):
+    if resource_name in groups:
+        resources += groups[resource_name]
+config.set_enabled_resources(resources)
+
+# Fail if the policy name is not provided.
+if len(resources) == 0:
+    fail("🚨 ERROR: No policy passed! Please run: tilt up <POLICY_NAME>")
+
+POLICY = resource_name
+IMAGE_BASE = "ttl.sh/ghcr.io/containers/nri-plugins/nri-resource-policy-"
+IMAGE = IMAGE_BASE + POLICY
+COMPILE_CMD = ('make BINARIES= OTHER_IMAGE_TARGETS= PLUGINS=nri-resource-policy-' + POLICY + ' build-plugins')
+DEPS = ['./pkg', './cmd', './deployment']
+
+###################################
+# The main tasks are executed here.
+###################################
+
+# Builds a binary.
+local_resource(
+    'binary-build-logs',
+    COMPILE_CMD,
+    deps=DEPS
+)
+
+# Builds a container image.
+docker_build(
+    IMAGE,
+    '.',
+    dockerfile='./cmd/plugins/' + POLICY + '/Dockerfile'
+)
+
+# Deploy the policy Helm chart.
+helm_resource(
+    'controller-logs',
+    './deployment/helm/' + POLICY,
+    namespace='kube-system',
+    deps=DEPS,
+    image_deps=[IMAGE],
+    image_keys=[('image.registry', 'image.repository', 'image.tag')],
+    flags=['--set=image.name=' + IMAGE],
+    resource_deps=['binary-build-logs']
+)